So _tally has changed when used in an aggregate function SQL. What about the following?

SELECT DISTINCT ALLTRIM(code)+" - "+ALLTRIM(code_desc) AS codename ;
	FROM codes 
        WHERE code_id = "COLLATTYPE" INTO ARRAY a_collatty
PUBLIC a_collatty[_tally+1]
       a_collatty[_tally+1] = " "
	=ASORT(a_collatty)